After his parents divorced, Akira was taken in by his father and was eagerly waiting for the next Sunday. Because Sunday was the day he could be reunited with his mother, Kyoka, who had been living far away for a long time. And on that day, his mother, Kyoka, came running to Akira's house! As if to fill the void of a year... as if to explode their pent-up sexual desire... the two of them desired each other. And so, for the next 24 hours until his father returned home, the two of them began a life of orgasmic ecstasy and nakedness.